Siderite is a carbonate mineral of iron, with an iron content of 43.47%~48.27%. Roasting-magnetic separation method is a commonly used siderite beneficiation process. After neutral roasting, the siderite will decompose carbon dioxide, and the ore grade and the magnetic properties of the ore will be improved. Iron ore is enriched.

The single sorting process of gravity separation and strong magnetic separation can be used to treat single siderite with coarse grains, but it is difficult to obtain qualified concentrate products when sorting fine grained siderites. These two methods All of them can be used as a pretreatment method for siderite, which can improve the separation index of siderite. In addition, flotation can also be used in the combined process of siderite separation. As the main separation method of siderite, the main purpose is to flotate mixed iron minerals containing siderite.